1 // Copyright 2018 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
8 // Functions to access/create device major and minor numbers matching the
9 // encoding used by AIX.
13 // Major returns the major component of a Linux device number.
14 func Major(dev uint64) uint32 {
15 return uint32((dev >> 16) & 0xffff)
18 // Minor returns the minor component of a Linux device number.
19 func Minor(dev uint64) uint32 {
20 return uint32(dev & 0xffff)
23 // Mkdev returns a Linux device number generated from the given major and minor
25 func Mkdev(major, minor uint32) uint64 {
26 return uint64(((major) << 16) | (minor))